Digital electronic truck scale weighing sensor system is a traditional. Based on analog sensors, integrating modern microelectronics technology and microcomputer. An electronic weighing technology developed from computer technology. This article focuses on two types of weighing sensors through data analysis. The impact of performance differences on cost performance, stability, accuracy, etc.
Nippon Steel Co., Ltd. currently has 34 electronic truck scales, among which 7 medium analog electronic truck scales, 27 digital electronic truck scales tower. 2019-2020 Analog and Digital Load Sensor Usage and. It is found from Table 1 that the annual replacement number of digital load cells. There are 4 units, which is much lower than the number of replacement analog load cells. Although the unit price of digital weighing sensors is 240% higher than that of analog sensors, but. Its service life is 286% longer than that of analog sensors, and a single digital scale. The annual maintenance cost of the heavy sensor (replacement cost is shared equally) is only for analog transmission. Sensor 13.46%. It can be seen that digital load cells are cost-effective than analog sensors.
Most digital load cells use military standard aviation plugs. It not only ensures the protection level of IP68, but also makes the sensor compatible with. The cable becomes two independent devices. Replace the sensor or replace the cable. Convenient, with automatic collection preprocessing, storage and memory functions, and unique marking. After multiple sensors are connected in parallel to form a scale, they can be inspected separately. Check the status of each sensor. When replacing the digital sensor, simply replace the Relevant parameters can be entered into the new sensor without re-calibration of the system. Determined, so the average troubleshooting time is only 17 minutes. analog scale. Determining the fault of the heavy sensor is more complicated and may require a jack. After lifting the scale, check the usage of sensors one by one or use a multimeter. Measure the load cell output signal, input and output resistance, etc. one by one, Troubleshooting takes longer.
From the analysis of failure rate, the failure rate of digital weighing sensor is only. It is 13.11% of the analog sensor. Therefore, digital load sensing. The sensor is higher than the analog sensor in terms of stability of use.
Analog load cells have slightly different sensitivities when shipped from the factory. And the degree of aging of each sensor is different during use, aggravated. The sensitivity of the sensor is inconsistent, resulting in the effect of the same measured object. The output signal (data) of each sensor is different. digital scale. The heavy sensor has a unique mark. After multiple sensors are assembled in parallel. The weighing instrument checks the status of each sensor. Adjust by weighing instrument. Adjust the sensor coefficient to compensate the output signal of the load cell.